I think Kim Jong-un’s death is still unconfirmed by the PDRK government, so it is just speculation. As I understand it, he has pulled a disappearing act before, so I see no reason to decide he is ill, incapacitated, or dead. For all we know, he may be binge-watching his favorite shows on one of the streaming services or playing some XBox clone of the game Risk and trying to conquer the world that way.